DocumentCode :
2051416
Title :
A reliability estimation method of character recognition using maximization of error-rejection rate
Author :
Kimura, Yoshimasa ; Nishi, Hiroyuki ; Mukai, Eiich
Author_Institution :
Fac. of Comput. & Inf. Sci., Sojo Univ., Kumamoto, Japan
fYear :
2010
fDate :
21-24 Nov. 2010
Firstpage :
903
Lastpage :
908
Abstract :
We propose a novel reliability estimation method which judges whether the recognition result is correct or erroneous in character recognition. To solve the problem, this paper have the problem of the reliability estimation return to the constraint satisfaction problems of maximizing the error-rejection rate when the own-category relief rate is given. To calculate the correct-acceptance rate and error-rejection rate, the technology of two thresholds used in the field of reject judgment is applied. Since this problem cannot be solved by an equation, this paper proposes a graphic solution. The formulation of the problem and the solution proposal are new. In an experiment using character patterns written in free style, reliability achieved a range from 0.802 to 0.819. Since the recognition rate was 74.8%, the value converted into the percentage of reliability exceeds the recognition rate. On the patterns estimated as correct recognition, the cumulative classification rates of top-1, top-2 and top-10 were 90.5%, 94.5% and 97.2%, respectively, and the occupation rate that is proportion of the patterns in entire patterns was 71.8% The experimental results show the proposed method can extract only the high-quality character pattern whose recognition rate is 90.5% from among unknown patterns including a poor-quality character pattern whose recognition rate is 74.8% These results confirm that the proposed method is effective against real world problems and is sufficient for practical application.
Keywords :
document handling; estimation theory; optical character recognition; optimisation; pattern classification; reliability; constraint satisfaction problem; correct acceptance rate; document input; error rejection rate; optical character recognition; reliability estimation method; written character pattern; OCR; character recognition; document input; recognition reliability;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
TENCON 2010 - 2010 IEEE Region 10 Conference
Conference_Location :
Fukuoka
ISSN :
pending
Print_ISBN :
978-1-4244-6889-8
Type :
conf
DOI :
10.1109/TENCON.2010.5686555
Filename :
5686555
Link To Document :
بازگشت